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| ==Adenomyoepithelioma== | | ==Adenomyoepithelioma== |
| ===General===
| | {{Main|Adenomyoepithelioma}} |
| *Rare lesion consisting of epithelial and myoepithelial elements.
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| **May occur in other sites, e.g. tonsil.<ref name=pmid20356364>{{Cite journal | last1 = Ren | first1 = J. | last2 = Song | first2 = L. | last3 = Dang | first3 = Q. | last4 = Zhang | first4 = X. | last5 = Jiang | first5 = SW. | last6 = Zhang | first6 = G. | last7 = Wang | first7 = N. | last8 = Liu | first8 = Z. | last9 = Wang | first9 = J. | title = Primary adenomyoepithelioma of tonsil. | journal = Head Neck Oncol | volume = 2 | issue = | pages = 7 | month = | year = 2010 | doi = 10.1186/1758-3284-2-7 | PMID = 20356364 }}</ref>
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| *May be benign or malignant.<ref name=pmid12591699>{{Cite journal | last1 = Howlett | first1 = DC. | last2 = Mason | first2 = CH. | last3 = Biswas | first3 = S. | last4 = Sangle | first4 = PD. | last5 = Rubin | first5 = G. | last6 = Allan | first6 = SM. | title = Adenomyoepithelioma of the breast: spectrum of disease with associated imaging and pathology. | journal = AJR Am J Roentgenol | volume = 180 | issue = 3 | pages = 799-803 | month = Mar | year = 2003 | doi = | PMID = 12591699 | url=http://www.ajronline.org/content/180/3/799.full}}</ref><ref name=pmid19480267>{{Cite journal | last1 = Zizi-Sermpetzoglou | first1 = A. | last2 = Vasilakaki | first2 = T. | last3 = Grammatoglou | first3 = X. | last4 = Petrakopoulou | first4 = N. | last5 = Nikolaidou | first5 = ME. | last6 = Glava | first6 = C. | title = Malignant adenomyoepithelioma of the breast--case report. | journal = Eur J Gynaecol Oncol | volume = 30 | issue = 2 | pages = 234-6 | month = | year = 2009 | doi = | PMID = 19480267 }}</ref>
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| Note:
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| *Possibly the same tumour as [[epithelial-myoepithelial carcinoma]] of the [[salivary gland]].<ref name=pmid9769134>{{Cite journal | last1 = Seifert | first1 = G. | title = Are adenomyoepithelioma of the breast and epithelial-myoepithelial carcinoma of the salivary glands identical tumours? | journal = Virchows Arch | volume = 433 | issue = 3 | pages = 285-8 | month = Sep | year = 1998 | doi = | PMID = 9769134 }}</ref>
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| ===Microscopic===
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| Features:<ref>URL: [http://www.webpathology.com/image.asp?n=1&Case=322 http://www.webpathology.com/image.asp?n=1&Case=322]. Accessed on: 16 August 2011.</ref>
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| *Well-circumscribed.
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| *Glandular architecture with:
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| **Easily identifiable myoepithelial cells - with clear cytoplasm - '''key feature'''.
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| **Eosinophilic cuboidal epithelial cells.
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| *Eosinophilic basement membrane material between glands.
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| DDx:
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| *[[Invasive ductal carcinoma of the breast]] (on core biopsy).
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| *Mammary pleomorphic adenoma.
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| *Ductal adenoma.
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| *[[Tubular adenoma of the breast]] - does not have a prominent (clear) myoepithelial component.
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| *[[Sclerosing adenosis]].<ref name=chu>Chu et al. (2006). Adenomyoepithelioma of the Breast — A Case Report. Tzu Chi Med J. Vol. 18 No. 1. URL:URL: [http://www.tzuchi.com.tw/file/tcmj/95-1/2-8.pdf http://www.tzuchi.com.tw/file/tcmj/95-1/2-8.pdf]. Accessed on: 28 April 2012.</ref>
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| ====Images====
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| <gallery>
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| Image:Adenomyoepithelioma_-_low_mag.jpg | Adenomyoepithelioma - low mag. (WC/Nephron)
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| Image:Adenomyoepithelioma_-_high_mag.jpg | Adenomyoepithelioma - high mag. (WC/Nephron)
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| </gallery>
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| Webpathology.com:
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| *[http://www.webpathology.com/image.asp?n=1&Case=322 Adenomyoepithelioma - low mag. (webpathology.com)].
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| *[http://www.webpathology.com/image.asp?n=4&Case=322 Adenomyoepithelioma - high mag. (webpathology.com)].
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| ==Mammary myofibroblastoma== | | ==Mammary myofibroblastoma== |